Side bearing



Feb. 28, 1928.

S. B. HASELTINE SIDE BEARING Filed Jan. 13. 1924 Patented Feb.y 28, 1928.

Unirse stares s'rAeY B. HASELTINE, er CHICAGO, ILLiNois, rissIGNon, BY MnsNn ASSIGNMENTS, To W. H. iviiNnia, INC., .4i oonromi'ri'on or nELAwARE. Q

l'srnn BEARING.

Application led January 18,1924. Serial No. 686,950.

This invention relates to improvements in side bearings.

One object of this invention is to provide a side bearing particularly adapted for usev on railway cars and wherein the anti-friction element is automatically centered under the influence of gravity after each actuation thereof when the pressure is removed there' r weights will. be tilted and thereby moved'to a position of unstable equilibrium to automatically insure the return of the anti-friction element when the load is removed.

In the drawing, forming a part of this specification. Figure 1 is a vertical sectional view taken through the ends of the body and truckbolsters of a ear, showing my improvements in connection therewith.v And Fig-` ure 2 is a vertical sectional view correspond.-

' substantially to the line 2-2 of Figure 1.

In'said drawing, 10 indicates the upper portion of the truck bolster, and 11 the iinderside of the opposed body bolster of a railway car. As shown, the improved bearing` is attached to the truck bolster and comprises, broadly, a retaining or housing ca-sting A; an anti-friction-element B; and a pair of counterweights C. Y The housing or retainer A. is preferably in the form of a hollow box casting open atits top and bottom, having sidewalls 12 with laterally offset guides 121 therein and end walls 13. Lugs 14 areprovided adjacent the.

bottom of the retaining member to receive rivets 15 .or other fastening means whereby the housing may be secured to the bolster 10. VA bearing plate 16, preferably having a hardened wearing port-ion 16', is secured in the bottom of the housing by rivets 17.

The anti-friction element comprises a central cylindrical roller portion 19 whose length is slightly less than the distance between the opposed edges 18 of the-side walls 12, said roller having substantially triangular pro-- jections 20 at the ends thereof, and a pair of lugs 21 projecting longitudinally of the roller at the opposite ends of the lower edges of each triangular. portion 20 as shown. It will be noted that .the projecting portions 20 and 21 of the anti-friction element overhang the bearing portion 16k and prevent withdrawal of the anti-friction element through the top of the retaining member. The projections 20 are'primarily to strengthen the lugs 21 and prevent their breaking and they-also act as counterweights to assist the return of the roller toits-normal centr-alA position after the load is released.

The main counterweights C are of like' construction, the same being located one at each end of the anti-friction element. Each of said counterweights preferably rests on the bolster y10 and is in theform of a relay tivelyV thick plate having rounded corners 22 at the ends of the lower edge thereof, andv of such size that they may be tilted about one of their rounded corners when the anti# friction element is shifted to either sideqof its normal central position. -The counterweights are provided with vertically extend# ing, elongated slots or openings 23 to loosely thereby. Openings 211 may be provided in the' lower edges of the counterweig-hts to permit foreign matter to be washedA frein-.

within they housing, the side walls of the latterbeing similarly apertured as indicated.,y

at 25. Y f

When thefanti-friction element is shifted to yeitherside of its normal central position, j

counterweights C, rocking them about their.

remote rounded corners 22. V.The parts will be in unstable equilibrium and as soon as the: pressure orloadis released from theV anti-friction element, the counterweights C,

acting together with the roller extensions 20, will automatically return the anti-friction element, under the influence of to itsnormal central position.

gravity,

receive the lugs 21 as shown, and be engaged` The guides are shaped to conform tothe I lines generated by theV counterweights C during their tilting movements while actuated `during the rolling movement ofthe i .anti-friction element, so that bodily shifting of the counterweights and the roller con- A nected thereto with respect to the retaining` memberis practicablv prevented. Y y

Uscillation of the anti-friction element when not under -load is prevented to any appreciable extent, because y,the counter- .l 

